"*"*kernel: protection fault trap, code=0 Stopped at mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace mrouter6_rtwalk_delete(87b2c09d17c1d94f,0,0) at mrouter6_rtwalk_delete+0x2b sys/netinet6/ip6_mroute.c:502 rtable_walk_helper(fffffd8036d659f0,ffff800014932878) at rtable_walk_helper+0x58 sys/net/rtable.c:683 art_table_walk(ffff800000075880,fffffd8036d64100,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x226 art_walk_apply sys/net/art.c:676 [inline] art_table_walk(ffff800000075880,fffffd8036d64100,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x226 sys/net/art.c:648 art_table_walk(ffff800000075880,fffffd8036d64060,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64040,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64020,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64000,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64080,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d640a0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d640c0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d640e0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64120,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d641a0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d641c0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64200,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64220,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64260,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d642c0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d642e0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64300,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64320,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64340,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d643a0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d643c0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d643e0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64420,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64440,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64460,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d644a0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d644e0,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64500,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64520,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64540,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_table_walk(ffff800000075880,fffffd8036d64f60,ffffffff81045bb0,ffff800014932878) at art_table_walk+0x2a6 sys/net/art.c:657 art_walk(ffff800000075880,ffffffff81045bb0,ffff800014932878) at art_walk+0xcf sys/net/art.c:595 rtable_walk(0,18,0,ffffffff81047de0,0) at rtable_walk+0xd4 ip6_mrouter_done(fffffd803d8acc00) at ip6_mrouter_done+0xb5 rip6_detach(fffffd803d8acc00) at rip6_detach+0x56 sys/netinet6/raw_ip6.c:757 soclose(fffffd803d8acc00,0) at soclose+0xb2 sys/kern/uipc_socket.c:303 soo_close(fffffd803622ed28,ffff800014915b40) at soo_close+0x40 fdrop(fffffd803622ed28,ffff800014915b40) at fdrop+0xc2 sys/kern/kern_descrip.c:1273 closef(fffffd803622ed28,ffff800014915b40) at closef+0x118 sys/kern/kern_descrip.c:1257 fdfree(ffff800014915b40) at fdfree+0x100 sys/kern/kern_descrip.c:1189 exit1(ffff800014915b40,0,1) at exit1+0x32f sys/kern/kern_exit.c:196 sys_exit(ffff800014915b40,ffff800014932d10,ffff800014932d60) at sys_exit+0x17 sys/kern/kern_exit.c:94 syscall(ffff800014932de0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,1,0,1,0,7f7ffffcb4f4) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcb4c0, count: -47 ddb> show registers rdi 0x87b2c09d17c1d94f rsi 0 rbp 0xffff8000149315b0 rbx 0xffff800000075888 rdx 0 rcx 0 rax 0x204 r8 0 r9 0x5 r10 0 r11 0xaf554a2b28f7431 r12 0 r13 0xfffffd8036d64100 r14 0 r15 0x87b2c09d17c1d94f rip 0xffffffff81047e0b mrouter6_rtwalk_delete+0x2b cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800014931570 ss 0x10 mrouter6_rtwalk_delete+0x2b: movl 0x5c(%r15),%r12d ddb> show proc PROC (syz-executor.0) pid=32240 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000149153d8,0xffffffff8255c658 process=0xffff8000ffff70f0 user=0xffff80001492d000, vmspace=0xfffffd803f013000 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 7683 329741 53983 0 3 0x82 nanosleep syz-executor.0 60016 311184 0 0 3 0x14200 bored sosplice 87908 281953 1 0 3 0x100083 ttyin getty 84444 497010 53983 0 2 0x2 syz-executor.1 53983 441953 53739 0 3 0x82 thrsleep syz-fuzzer 53983 365810 53739 0 3 0x4000082 nanosleep syz-fuzzer 53983 431205 53739 0 3 0x4000082 thrsleep syz-fuzzer 53983 97871 53739 0 3 0x4000082 thrsleep syz-fuzzer 53983 99115 53739 0 3 0x4000082 thrsleep syz-fuzzer 53983 267326 53739 0 3 0x4000082 kqread syz-fuzzer 53983 199404 53739 0 3 0x4000082 thrsleep syz-fuzzer 53739 143713 18786 0 3 0x10008a pause ksh 18786 190089 7789 0 3 0x92 select sshd 7789 246937 1 0 3 0x80 select sshd 49512 466292 24724 73 3 0x100090 kqread syslogd 24724 16527 1 0 3 0x100082 netio syslogd 4676 397699 1 77 3 0x100090 poll dhclient 64386 290447 1 0 3 0x80 poll dhclient 62264 301886 0 0 2 0x14200 zerothread 99247 275129 0 0 3 0x14200 aiodoned aiodoned 18394 340771 0 0 3 0x14200 syncer update 63920 308336 0 0 3 0x14200 cleaner cleaner 73362 461459 0 0 3 0x14200 reaper reaper 67756 484730 0 0 3 0x14200 pgdaemon pagedaemon 45741 314264 0 0 3 0x14200 bored crynlk 76326 56583 0 0 3 0x14200 bored crypto 75391 121371 0 0 3 0x40014200 acpi0 acpi0 4479 2306 0 0 3 0x14200 bored softnet 93249 264711 0 0 2 0x14200 systqmp 49907 341466 0 0 3 0x14200 bored systq 26337 25121 0 0 3 0x40014200 bored softclock 76841 504697 0 0 3 0x40014200 idle0 29745 464446 0 0 3 0x14200 bored smr 1 334880 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9503 6346K 6698K 78643K 10866 0 0 pcb 15 8K 8K 78643K 127 0 0 rtable 113 4K 4K 78643K 405 0 0 ifaddr 54 12K 13K 78643K 131 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 65 0 0 iov 0 0K 16K 78643K 81 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1205 76K 77K 78643K 1581 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 12 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 121 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1794 195K 288K 78643K 12723 0 0 file desc 5 13K 25K 78643K 1038 0 0 sigio 0 0K 0K 78643K 16 0 0 proc 49 38K 62K 78643K 475 0 0 subproc 32 2K 2K 78643K 51 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 81 0 0 in_multi 33 2K 2K 78643K 62 0 0 ether_multi 2 0K 0K 78643K 5 0 0 mrt 2 0K 0K 78643K 9 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 102 450K 450K 78643K 102 0 0 exec 0 0K 1K 78643K 275 0 0 pfkey data 0 0K 1K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 90 21K 22K 78643K 3319 0 0 UVM aobj 52 2K 2K 78643K 54 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 109 0 0 NDP 11 0K 0K 78643K 37 0 0 temp 162 3535K 3608K 78643K 35360 0 0 kqueue 0 0K 0K 78643K 7 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 2 1 0 1 1 0 8 0 rtpcb 80 64 0 62 1 0 1 1 0 8 0 rtentry 112 58 0 14 2 0 2 2 0 8 0 unpcb 120 379 0 371 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 2691 0 2691 1 1 0 1 0 8 0 tcpcb 544 189 0 185 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 2 0 2 1 1 0 1 0 8 0 inpcb 280 537 0 528 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 0 1 1 0 8 1 nd6 48 6 0 2 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1128 12 0 12 4 3 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 257 0 43 14 0 14 14 0 8 0 art_table 32 258 0 43 2 0 2 2 0 8 0 art_node 16 55 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 13 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 119 0 109 1 0 1 1 0 8 0 shmpl 112 52 0 2 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 3002 0 1613 46 0 46 46 0 8 0 ffsino 240 3002 0 1613 83 0 83 83 0 8 0 nchpl 144 4645 0 3047 60 0 60 60 0 8 0 uvmvnodes 72 3114 0 0 57 0 57 57 0 8 0 vnodes 208 3114 0 0 164 0 164 164 0 8 0 namei 1024 14092 0 14092 2 1 1 1 0 8 1 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 13232 0 13232 12 11 1 7 0 8 1 plimitpl 152 135 0 128 1 0 1 1 0 8 0 sigapl 432 1207 0 1194 2 0 2 2 0 8 0 futexpl 56 17652 0 17652 1 0 1 1 0 8 1 knotepl 112 243 0 224 1 0 1 1 0 8 0 kqueuepl 104 244 0 242 1 0 1 1 0 8 0 pipepl 112 758 0 739 1 0 1 1 0 8 0 fdescpl 424 1208 0 1194 2 0 2 2 0 8 0 filepl 120 7452 0 7355 4 0 4 4 0 8 1 lockfpl 104 376 0 375 1 0 1 1 0 8 0 lockfspl 48 108 0 107 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 31 0 21 1 0 1 1 0 8 0 ucredpl 96 1499 0 1492 1 0 1 1 0 8 0 zombiepl 144 1195 0 1194 2 1 1 1 0 8 0 processpl 864 1223 0 1194 4 0 4 4 0 8 0 procpl 632 2586 0 2551 5 1 4 5 0 8 0 sosppl 128 5 0 5 2 2 0 1 0 8 0 sockpl 384 992 0 973 4 1 3 3 0 8 1 mcl64k 65536 24 0 24 5 4 1 1 0 8 1 mcl16k 16384 6 0 6 4 3 1 1 0 8 1 mcl12k 12288 20 0 20 3 3 0 1 0 8 0 mcl9k 9216 14 0 14 4 3 1 1 0 8 1 mcl8k 8192 24 0 24 3 2 1 1 0 8 1 mcl4k 4096 62 0 62 3 2 1 1 0 8 1 mcl2k2 2112 6 0 6 5 5 0 1 0 8 0 mcl2k 2048 58162 0 58110 21 13 8 15 0 8 0 mtagpl 80 4 0 4 2 2 0 1 0 8 0 mbufpl 256 98270 0 98180 11 3 8 10 0 8 0 bufpl 256 8300 0 3364 309 0 309 309 0 8 0 anonpl 16 107832 0 95248 89 21 68 68 0 62 16 amapchunkpl 152 5039 0 4936 15 10 5 10 0 158 0 amappl16 192 5715 0 5011 62 18 44 48 0 8 8 amappl15 184 299 0 298 1 0 1 1 0 8 0 amappl14 176 37 0 35 1 0 1 1 0 8 0 amappl13 168 694 0 691 3 2 1 1 0 8 0 amappl12 160 4 0 2 2 1 1 1 0 8 0 amappl11 152 53 0 42 1 0 1 1 0 8 0 amappl10 144 13 0 11 1 0 1 1 0 8 0 amappl9 136 595 0 588 1 0 1 1 0 8 0 amappl8 128 150 0 130 1 0 1 1 0 8 0 amappl7 120 47 0 43 1 0 1 1 0 8 0 amappl6 112 65 0 57 1 0 1 1 0 8 0 amappl5 104 156 0 145 1 0 1 1 0 8 0 amappl4 96 1626 0 1598 1 0 1 1 0 8 0 amappl3 88 146 0 140 1 0 1 1 0 8 0 amappl2 80 9665 0 9598 3 1 2 3 0 8 0 amappl1 72 30386 0 29976 26 16 10 20 0 8 0 amappl 80 2819 0 2784 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 53 0 2 1 0 1 1 0 8 0 uaddrrnd 24 1208 0 1194 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1208 0 1194 1 0 1 1 0 8 0 vmmpekpl 168 11780 0 11756 2 0 2 2 0 8 0 vmmpepl 168 146619 0 144879 140 53 87 101 0 357 9 vmsppl 272 1207 0 1194 2 1 1 2 0 8 0 pdppl 4096 2422 0 2388 6 1 5 6 0 8 0 pvpl 32 325559 0 309979 209 42 167 167 0 265 39 pmappl 200 1207 0 1194 1 0 1 1 0 8 0 extentpl 40 38 0 22 1 0 1 1 0 8 0 phpool 112 470 0 32 13 0 13 13 0 8 0